These boards have been removed from mostly new TVS with broken screens and should work if properly installed. SAMSUNG QN75Q80AAFXZA TV LED DRIVER BOARD BN44-01040C / L75S8ND TDY. Please verify that your board part number is the same as BN44-01040C / L75S8ND TDY. The part number is the first number left of the /, or the sole number listed. Most often written in title as (part number / board number)